168 Dr Graham's Description of New or Rare Plants. 



Browallia grandiflora. 



B. grandiflora ; caule difFuso, ramoso ; foliis ovatis, acutis ; pedunculis 

 axillaribus unifloris, vel in racemis terminalibus dispositis ; ramulis 

 calycibusque adultis glabris. 

 Description. — Annual. Stem herbaceous, diffused, branched, smooth, 

 green, purplish below ; branches spreading, smooth and shining, scat- 

 tered. Leaves ovate, acuminate, attenuated into a petiole, smooth and - 

 shining, the middle rib and converging veins prominent below, and chan- 

 nelled above. Peduncles straight, single-flowered, axillary, and longer 

 than the diminished leaves near the termination of the branches, or 

 collected into lax terminal racemes, when young glanduloso-pubescent. 

 Calyx 5.cleft, smooth, or, when young, glanduloso-villous, many-nerved, 

 nerves branching ; segments unequal, spreading, linear, channelled. 

 Corolla hypocrateriform ; tube longer than the calyx, slightly inflated 

 towards the top, and compressed vertically, glanduloso-villous, green- 

 ish-yellow, marked, as well as the calyx, with dark streaks ; limb pli- 

 cate in the bud, when expanded flat, white, or very pale lilac, with a 

 yellow throat, yellow on the outside, bilabiate, the upper lip linear and 

 emarginate, the lower much larger, semicircular, formed of four united 

 obcordato-cuneate lobes, each smaller than the upper lip. Stamens di- 

 dynamous, adhering to the inside of the tube, the two longer closing 

 the throat of the corolla with the upper part of their filaments, which 

 is bent down, flattened and hairy above, their antliers included, having 

 one perfect and one abortive lobe, divaricated, compressed, and open- 

 ing along their upper edge ; filaments of the shorter stamens flexuose 

 at the top, filiform and smooth, their anthers bilobular, both the lobes 

 perfect, divaricated and compressed, bursting along their upper edges ; 

 pollen and anthers of all the stamens yellow. Germen ovate, and slightly 

 compressed, pubescent, bilocular, bivalvular, the dissepiment proceeding 

 from the centre of the valves across the shorter diameter of the germen ; 

 seminal receptacle large, central, covered with numerous ovules. Stt/le 

 filiform, glabrous, longer than the shorter, shorter than the longer sta- 

 mens, tortuose at the top. Stigma quadrangular, peltate, green, ob- 

 scurely 4-lobed, having two depressions or cells in the upper margin, 

 where the anthers of the longer stamens are lodged, and two obscure de- 

 pressions on the lower side, where the anthers of the shorter stamens ap- 

 pear to be placed. 

 I am indebted to Dr Hooker for the description of the style and stigma, 

 and for some observations regarding the anthers, for the style was lost 

 in the only flower which I reserved for dissection, when the specimen 

 was sent to him to be figured in the Botanical Magazine. The anthers 

 on the longer and shorter stamens appeared to him to be alike, reniform, 

 and 1 -celled ; but I am quite certain that the above description of what 



1 saw is accurate : the appearance probably varies from abortion, and in 

 different stages of evolution. 



We received this plant from the Botanic Garden, Glasgow, in October 

 last, having been raised there from seeds collected by Mr Cruckshanks 

 near Yazo, in the valley of Canta in Peru. It is now (December) flower- 

 ing very freely in the greenhouse, and probably will be found to bear 

 cultivation as a very ornamental annual in the open border. 



Conobea alata. 



C. alata ; caule erecto, alato ; foliis lanceolatis, amplexicaulibus, serru- 

 latis, breve pubescentibus, pedunculo axillari solitario subc^moso 

 multo longioribus. 



Description J?oo^ creeping. Stem (24 feet high) erect, glabrous, shining, 



4-sided, 4-winged, wings undulate, and sparingly ciliated. Branches de- 

 cussating, spreading wide, similar to the stem. Leaves (10 inches long, 



2 broad) opposite, spreading horizontally, acutely serrulate, lanceolate, 

 attenuated and entire towards the base, at their origin dilated, and stem 

 clasping, much veined and reticulated, soft, and on both sides covered 



